// With default lmCompatibility=3, getUnicodeHash returns empty array for NTLMv2
        NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("DOMAIN", "user", "password");
        byte[] challenge = { 1, 2, 3, 4, 5, 6, 7, 8 };
        byte[] hash = auth.getUnicodeHash(challenge);
        assertNotNull(hash);
        // For lmCompatibility 3,4,5 (NTLMv2), returns empty array
        assertEquals(0, hash.length);
    }

  }

  /** Returns a hash function implementing the SHA-512 algorithm (512 hash bits). */
  public static HashFunction sha512() {
    return Sha512Holder.SHA_512;
  }

  private static final class Sha512Holder {
    static final HashFunction SHA_512 =
        new MessageDigestHashFunction("SHA-512", "Hashing.sha512()");
  }

  /**

    }

    /**
     * Returns the primary domain name of the server.
     *
     * @return the primaryDomain
     */
    public final String getPrimaryDomain() {
        return this.primaryDomain;
    }

    /**
     * Indicates whether the session was established as a guest.
     *
     * @return the isLoggedInAsGuest
     */
    public final boolean isLoggedInAsGuest() {

        fq = filterQueryString;
    }

    /**
     * Returns the query string.
     * @return The query string.
     */
    public String getQueryString() {
        return q;
    }

    /**
     * Returns the filter query string.
     * @return The filter query string.
     */
    public String getFilterQueryString() {
        return fq;
    }

        return getMimeType(extension, "application/octet-stream");
    }

    /**
     * Returns the MIME type for the given file extension with a custom default.
     *
     * @param extension the file extension to look up (without the dot)
     * @param def the default MIME type to return if no mapping is found
     * @return the MIME type for the extension, or the specified default if not found

   * and {@link #isVertical} methods return {@code false} and the {@link #slope}, and {@link
   * #transform} methods all return {@link Double#NaN}. The {@link #inverse} method returns the same
   * instance.
   */
  public static LinearTransformation forNaN() {
    return NaNLinearTransformation.INSTANCE;
  }

  /** Returns whether this is a vertical transformation. */

    return getJlaMethod("getStackTraceElement", Throwable.class, int.class);
  }

  /**
   * Returns the Method that can be used to return the size of a stack, or null if that method
   * cannot be found (it is only to be found in fairly recent JDKs). Tries to test method {@link
   * sun.misc.JavaLangAccess#getStackTraceDepth(Throwable) getStackTraceDepth} prior to return it
   * (might fail some JDKs).
   *

            return allRecordCount;
        }

        /**
         * Returns the page size (number of records per page).
         *
         * @return the page size
         */
        public int getPageSize() {
            return pageSize;
        }

        /**
         * Returns the current page number (1-based).
         *
         * @return the current page number
         */

      Iterable<T> removeFrom, Predicate<? super T> predicate) {
    if (removeFrom instanceof Collection) {
      return ((Collection<T>) removeFrom).removeIf(predicate);
    }
    return Iterators.removeIf(removeFrom.iterator(), predicate);
  }

  /** Removes and returns the first matching element, or returns {@code null} if there is none. */
  static <T extends @Nullable Object> @Nullable T removeFirstMatching(

    @SuppressWarnings("unchecked")
    Class<T> wrapped = (Class<T>) PRIMITIVE_TO_WRAPPER_TYPE.get(type);
    return (wrapped == null) ? type : wrapped;
  }

  /**
   * Returns the corresponding primitive type of {@code type} if it is a wrapper type; otherwise
   * returns {@code type} itself. Idempotent.
   *
   * <pre>
   *     unwrap(Integer.class) == int.class
   *     unwrap(int.class) == int.class